She raised them only for a year. And that too he was not a kid. She just provided him with food and shelter.
That's true. But it's my opinion, and I don't have anything against them ending up together. But I also don't think anything is wrong with her being so dense about his feelings. She sees him as a kid she's raising, and she doesn't see him as a man ofc he's only 13.
She provides with food and shelter and she cares about them, protect them, go on outings with them but yeah, not raising, absolutely not.
She seems more like a older sister than a mother.
I mean, I know she's a witch and they age differently, but still it'd be weird if you date the kid you literally raised. Wouldn't it?